Determine the pH of the following solution. Initial concentrations are given. [NH₃] = 1.20 M, [KOH] = 0.320 M, Kb (NH₃) = 1.8 × 10^-5 A) 13.5 B) 8.7 C) 9.8 D) 11.7 E) 12.2

Question

Quizplus · Accepted Answer

The solution contains a strong base (KOH) and a weak base (NH3). The pH is primarily determined by the strong base, KOH. The concentration of OH- from KOH is 0.320 M, leading to a pOH of -log(0.320) = 0.49. Therefore, the pH is 14 - 0.49 = 13.51, approximately 13.5.

Determine the PH of the Following Solution